{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:SASLTE3T5CK5KEGRGOY5EVH7GY","short_pith_number":"pith:SASLTE3T","canonical_record":{"source":{"id":"1601.07186","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-26T21:00:15Z","cross_cats_sorted":[],"title_canon_sha256":"6fa9c64c2c670ebb0587adb1fe666e7b6ad9e667968c624f6dbb27ef326e3c06","abstract_canon_sha256":"d14cab9d1c9b09f218934cd0ee74b35b40480c44c96b15ea09b343997de649ca"},"schema_version":"1.0"},"canonical_sha256":"9024b99373e895d510d133b1d254ff362a818d15f12914e201a309ad28c0064f","source":{"kind":"arxiv","id":"1601.07186","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.07186","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"arxiv_version","alias_value":"1601.07186v1","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.07186","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"pith_short_12","alias_value":"SASLTE3T5CK5","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"SASLTE3T5CK5KEGR","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"SASLTE3T","created_at":"2026-05-18T12:30:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:SASLTE3T5CK5KEGRGOY5EVH7GY","target":"record","payload":{"canonical_record":{"source":{"id":"1601.07186","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-26T21:00:15Z","cross_cats_sorted":[],"title_canon_sha256":"6fa9c64c2c670ebb0587adb1fe666e7b6ad9e667968c624f6dbb27ef326e3c06","abstract_canon_sha256":"d14cab9d1c9b09f218934cd0ee74b35b40480c44c96b15ea09b343997de649ca"},"schema_version":"1.0"},"canonical_sha256":"9024b99373e895d510d133b1d254ff362a818d15f12914e201a309ad28c0064f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:20.247384Z","signature_b64":"IQoN03SBg3mMVllkJQa8T5vKt5WYzYqjcKdSMM4bE7T5apN+nAuRRJUxmLdS/hL1k6VlCWNdk2JmStP8eOAaBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9024b99373e895d510d133b1d254ff362a818d15f12914e201a309ad28c0064f","last_reissued_at":"2026-05-18T00:48:20.246647Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:20.246647Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.07186","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:48:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JPZ0/i0wue1+m6OluuqTPNqKerueU//UdAd1lL3L2JqA7+zYSr/Ic4aCwBTleefPkz5znqLcfVaxWRJRbf9NCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:36:36.387880Z"},"content_sha256":"58daad0fee21e8c982ee147691e6bb56bb9aa845202ebbd92ef3e3b5c5cfb3bc","schema_version":"1.0","event_id":"sha256:58daad0fee21e8c982ee147691e6bb56bb9aa845202ebbd92ef3e3b5c5cfb3bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:SASLTE3T5CK5KEGRGOY5EVH7GY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An instability of feedback regulated star formation in galactic nuclei","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2), (2) Caltech, (3) Northwestern, (4) UC Berkeley, (5) UC San Diego, (6) CITA), Claude-Andr\\'e Faucher-Gigu\\`ere (3), Du\\v{s}an Kere\\v{s}(5), Eliot Quataert (4), Mark Vogelsberger (1), Norman Murray (6) ((1) MIT, Paul Torrey (1, Philip F. Hopkins (2)","submitted_at":"2016-01-26T21:00:15Z","abstract_excerpt":"We examine the stability of feedback-regulated star formation (SF) in galactic nuclei and contrast it to SF in extended discs. In galactic nuclei the dynamical time becomes shorter than the time over which feedback from young stars evolves. We argue analytically that the balance between stellar feedback and gravity is unstable in this regime. We study this using numerical simulations with pc-scale resolution and explicit stellar feedback taken from stellar evolution models. The nuclear gas mass, young stellar mass, and SFR within the central ~100 pc (the short-timescale regime) never reach ste"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.07186","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:48:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xpQntXfE8hZ5ZGMEnFo+X+S+3mOamUcnEOWoqQK4OpWbAhbNjemY7yC6J3JSEFNMqXjauC5qKgzwuf8XEe2QAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:36:36.388387Z"},"content_sha256":"61a20e888dc539a0e9a1f9e6fef3e0bebe595e00219f10a2f77d56db1cdcc69f","schema_version":"1.0","event_id":"sha256:61a20e888dc539a0e9a1f9e6fef3e0bebe595e00219f10a2f77d56db1cdcc69f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SASLTE3T5CK5KEGRGOY5EVH7GY/bundle.json","state_url":"https://pith.science/pith/SASLTE3T5CK5KEGRGOY5EVH7GY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SASLTE3T5CK5KEGRGOY5EVH7GY/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T10:36:36Z","links":{"resolver":"https://pith.science/pith/SASLTE3T5CK5KEGRGOY5EVH7GY","bundle":"https://pith.science/pith/SASLTE3T5CK5KEGRGOY5EVH7GY/bundle.json","state":"https://pith.science/pith/SASLTE3T5CK5KEGRGOY5EVH7GY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SASLTE3T5CK5KEGRGOY5EVH7GY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:SASLTE3T5CK5KEGRGOY5EVH7GY","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"d14cab9d1c9b09f218934cd0ee74b35b40480c44c96b15ea09b343997de649ca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-26T21:00:15Z","title_canon_sha256":"6fa9c64c2c670ebb0587adb1fe666e7b6ad9e667968c624f6dbb27ef326e3c06"},"schema_version":"1.0","source":{"id":"1601.07186","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.07186","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"arxiv_version","alias_value":"1601.07186v1","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.07186","created_at":"2026-05-18T00:48:20Z"},{"alias_kind":"pith_short_12","alias_value":"SASLTE3T5CK5","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"SASLTE3T5CK5KEGR","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"SASLTE3T","created_at":"2026-05-18T12:30:44Z"}],"graph_snapshots":[{"event_id":"sha256:61a20e888dc539a0e9a1f9e6fef3e0bebe595e00219f10a2f77d56db1cdcc69f","target":"graph","created_at":"2026-05-18T00:48:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We examine the stability of feedback-regulated star formation (SF) in galactic nuclei and contrast it to SF in extended discs. In galactic nuclei the dynamical time becomes shorter than the time over which feedback from young stars evolves. We argue analytically that the balance between stellar feedback and gravity is unstable in this regime. We study this using numerical simulations with pc-scale resolution and explicit stellar feedback taken from stellar evolution models. The nuclear gas mass, young stellar mass, and SFR within the central ~100 pc (the short-timescale regime) never reach ste","authors_text":"2), (2) Caltech, (3) Northwestern, (4) UC Berkeley, (5) UC San Diego, (6) CITA), Claude-Andr\\'e Faucher-Gigu\\`ere (3), Du\\v{s}an Kere\\v{s}(5), Eliot Quataert (4), Mark Vogelsberger (1), Norman Murray (6) ((1) MIT, Paul Torrey (1, Philip F. Hopkins (2)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-26T21:00:15Z","title":"An instability of feedback regulated star formation in galactic nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.07186","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:58daad0fee21e8c982ee147691e6bb56bb9aa845202ebbd92ef3e3b5c5cfb3bc","target":"record","created_at":"2026-05-18T00:48:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"d14cab9d1c9b09f218934cd0ee74b35b40480c44c96b15ea09b343997de649ca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-26T21:00:15Z","title_canon_sha256":"6fa9c64c2c670ebb0587adb1fe666e7b6ad9e667968c624f6dbb27ef326e3c06"},"schema_version":"1.0","source":{"id":"1601.07186","kind":"arxiv","version":1}},"canonical_sha256":"9024b99373e895d510d133b1d254ff362a818d15f12914e201a309ad28c0064f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9024b99373e895d510d133b1d254ff362a818d15f12914e201a309ad28c0064f","first_computed_at":"2026-05-18T00:48:20.246647Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:20.246647Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IQoN03SBg3mMVllkJQa8T5vKt5WYzYqjcKdSMM4bE7T5apN+nAuRRJUxmLdS/hL1k6VlCWNdk2JmStP8eOAaBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:20.247384Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.07186","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58daad0fee21e8c982ee147691e6bb56bb9aa845202ebbd92ef3e3b5c5cfb3bc","sha256:61a20e888dc539a0e9a1f9e6fef3e0bebe595e00219f10a2f77d56db1cdcc69f"],"state_sha256":"66b1936b009fae2bb071c79bd4d3e4885099a215f6220c1072324a80de21d232"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"39HRb39V1zDT3bvQmjH4EreYydxRMKz+8PyJjybutiPSHvCaIczK+gD3OjowR9R9SzPEWE2AoQTSKqWyHrpqAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T10:36:36.391308Z","bundle_sha256":"239d941c9a75b5afcb17ef00b2c63f03435ff2a718b239b9e03bc3331a8dd90e"}}